Batman: The Animated Series Head Theories by Bruce Timm. Timm is a character designer, animator and producer. He is also a writer and artist working in comics, and is known for his contributions building the modern DC Comics animated franchise. Previous to this, he worked for Filmation on the Blackstar, Flash Gordon, and He-Man series; for Marvel on the original G.I. Joe series; and for Warner Bros. on Tiny Toon Adventures.